US8934657B2 - Speaker magnet assembly with included spider - Google Patents

Speaker magnet assembly with included spider Download PDF

Info

Publication number
US8934657B2
US8934657B2 US13/762,259 US201313762259A US8934657B2 US 8934657 B2 US8934657 B2 US 8934657B2 US 201313762259 A US201313762259 A US 201313762259A US 8934657 B2 US8934657 B2 US 8934657B2
Authority
US
United States
Prior art keywords
spider
magnetic member
yoke
separable parts
magnet assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
US13/762,259
Other versions
US20140219479A1 (en
Inventor
Christopher Wilk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Apple Inc
Original Assignee
Apple Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Apple Inc filed Critical Apple Inc
Assigned to APPLE INC. reassignment APPLE INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WILK, CHRISTOPHER
Priority to US13/762,259 priority Critical patent/US8934657B2/en
Priority to CN201480007695.4A priority patent/CN104969573B/en
Priority to KR1020157024155A priority patent/KR101718274B1/en
Priority to PCT/US2014/011854 priority patent/WO2014123674A1/en
Priority to EP14702406.1A priority patent/EP2954698B1/en
Priority to AU2014215702A priority patent/AU2014215702B2/en
Priority to TW103103959A priority patent/TWI548261B/en
Publication of US20140219479A1 publication Critical patent/US20140219479A1/en
Publication of US8934657B2 publication Critical patent/US8934657B2/en
Application granted granted Critical
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R15/00—Magnetostrictive transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/041—Centering
    • H04R9/043—Inner suspension or damper, e.g. spider
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit

Definitions

  • Embodiments of the invention relate to the field of electromagnetic audio speakers; and more specifically, to spiders for use in compact audio speakers.
  • Audio speakers use electrical signals to produce air pressure waves which are perceived as sounds.
  • Many audio speakers use a diaphragm that is movably suspended in a frame by a surround.
  • the diaphragm is coupled to a voice coil assembly that is suspended in a magnetic field.
  • the electrical signals representing the sound flow through the voice coil and interact with the magnetic field. This causes the voice coil and the coupled diaphragm to oscillate in response to the electrical signal.
  • the oscillation of the diaphragm produces air pressure waves.
  • the spider readily flexes in the direction of motion of the diaphragm, but resists motion perpendicular to the diaphragm's motion.
  • the spider surrounds the voice coil assembly in an annular manner.
  • the spider is desirable for the spider to be spaced at a distance from the surround to improve the resistance to perpendicular motion.
  • the magnet assembly that provides the magnetic field in which the voice coil assembly is suspended is typically the part of the speaker that is furthest from the surround.
  • the spider is typically attached to the speaker frame above the magnet assembly placing it closer to the surround than the magnet assembly.
  • Speakers used in compact, portable devices often need to be thin. This requires a construction that reduces the distance between the surround and the magnet assembly. This can make it difficult to attach the spider at a sufficient distance from the surround to effective resist perpendicular motion of the diaphragm and voice coil assembly.
  • a magnet assembly for a audio speaker provides a gap through which a voice coil assembly passes.
  • a magnetic member, a pole piece, and a yoke form a magnetic circuit that focuses magnetic energy in the gap.
  • a spider movably supports the voice coil assembly.
  • the spider is coupled to one of the magnetic member or the yoke by forming the one of the magnetic member or the yoke in two parts and joining the two parts with a portion of the spider between the two parts.
  • the spider may be formed from a thin film thermoplastic, such as polyetheretherketone, and may be less than 10 microns thick.
  • the portion of the spider that is between the two parts may be shaped such that a portion of the two parts are in direct contact with one another.
  • FIG. 1 is a pictorial view of an audio speaker that has been cut away along a diameter to allow the construction to be better seen.
  • FIG. 2 is a cross-section of a portion of a magnet assembly shown in FIG. 1 .
  • FIG. 3 is a cross-section of a portion of another magnet assembly.
  • FIG. 4 is a pictorial view of another spider and one part of a magnetic member.
  • FIG. 5 is a cross-section of a portion of still another magnet assembly.
  • FIG. 6 is a pictorial view of another audio speaker that has been cut away along a diameter to allow the construction to be better seen.
  • FIG. 1 is a pictorial view of an audio speaker 100 that has been cut away along a diameter to allow the construction to be better seen.
  • a diaphragm 102 is coupled to a frame 106 by a surround 104 that readily flexes to allow the diaphragm to move freely along an axis that is perpendicular to the face of the diaphragm.
  • FIG. 2 is a cross-section of a portion of a magnet assembly shown in FIG. 1 .
  • the magnet assembly includes a magnetic member 112 , 114 , a yoke 110 magnetically coupled to the magnetic member, and a pole piece 116 magnetically coupled to the magnetic member.
  • the pole piece forms one side of a gap through which a voice coil assembly 120 , 122 passes.
  • the magnetic member 112 , 114 , the yoke 110 , and the pole piece 116 form a magnetic circuit that focuses magnetic energy in the gap.
  • a spider 130 is coupled to the magnetic member by forming the magnetic member in a first part 112 and a second part 114 and joining the two parts with a portion 132 of the spider between the two parts. It will be appreciated that creating an additional gap in the magnetic circuit degrades the circuit.
  • the spider 130 may be formed from a thin film thermoplastic to minimize such degradation.
  • the thin film thermoplastic may have a thickness of less than 10 microns (0.010 mm, 0.0004 in.).
  • a magnet assembly may reach temperatures of about 100° Celsius (212° Fahrenheit) in operation.
  • the thin film thermoplastic should have a glass transition temperature (T g ) substantially above the peak operating temperature of the magnet assembly, for example greater than 110° Celsius (230° Fahrenheit).
  • the thin film thermoplastic may be polyetheretherketone (PEEK) which is strong, and heat-resistant having a glass transition temperature (T g ) of around 143° C. (289° F.).
  • the spider 130 provides a concentrically-waved film that couples the former 120 around which a voice coil 122 is wound to the magnet assembly.
  • the concentrically-waved film of the spider 130 readily flexes in the direction of motion of the diaphragm 102 , but resists motion perpendicular to the diaphragm's motion.
  • the spider surrounds and is attached to the former 120 in an annular manner, such as by being adhesively joined.
  • FIG. 3 is a cross-section of a portion of another magnet assembly similar to the one shown in FIG. 2 .
  • the portion 332 of the spider 330 that is between the two parts of the magnetic member 312 , 314 is shaped such that an inner portion of one of the magnets 312 passes through the spider to directly contact the other magnet 314 . The lessens the deleterious effects of the additional gap in the magnetic circuit that receives and supports a portion of the spider 330 .
  • FIG. 4 is a pictorial view of another spider 430 and one part 414 of a magnetic member.
  • the spider 430 includes a central opening 436 that is large enough to allow an inner portion 416 of the one magnet part 412 to pass through the spider to directly contact the other magnet part, as shown in FIG. 3 .
  • the spider 430 further includes peripheral openings 438 that allow projections 418 on the one magnet part 412 to pass through the spider to directly contact the other magnet part to further lessen the deleterious effects of the additional gap in the magnetic circuit.
  • Other embodiments may provide only the peripheral openings, which may have different sizes, shapes, and/or positions and be of different numbers.
  • Other embodiments may provide projections on both magnet parts and/or may provide recesses in one or both magnet parts to receive the projections.
  • FIG. 5 is a cross-section of a portion of still another magnet assembly similar to the one shown in FIG. 3 .
  • the magnetic member 512 is a single part.
  • the yoke is formed of a first part 510 and a second part 516 that includes the pole piece.
  • a portion 532 of the spider 530 is supported between the two parts.
  • FIG. 6 is a pictorial view of another audio speaker 600 that has been cut away along a diameter to allow the construction to be better seen.
  • the magnetic member 612 , 614 and the pole piece 616 are external to the voice coil assembly 620 .
  • the yoke 610 extends to the inside of the voice coil assembly 620 to complete the magnetic circuit and form one side of the gap.
  • the spider 630 is coupled to the magnetic member by forming the magnetic member in a first part 612 and a second part 614 and joining the two parts with a portion 632 of the spider between the two parts.
  • the acoustic speaker has been illustrated as being round but it may also be an oval, rectangle, or other shape.
  • the spider has been shown with a single convolution but it may be provided with other patterns of convolutions.
  • the spider may be formed of materials other than PEEK or thermoplastics. The description is thus to be regarded as illustrative instead of limiting.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

A magnet assembly for a audio speaker provides a gap through which a voice coil assembly passes. A magnetic member, a yoke, and a pole piece form a magnetic circuit that focuses magnetic energy in the gap. A spider movably supports the voice coil assembly. The spider is coupled to one of the magnetic member or the yoke by forming the one of the magnetic member or the yoke in two parts and joining the two parts with a portion of the spider between the two parts. The spider may be formed from a thin film thermoplastic, such as polyetheretherketone (PEEK), and may be less than 10 microns thick. The portion of the spider that is between the two parts may be shaped such that a portion of the two parts are in direct contact with one another.

Description

BACKGROUND
1. Field
Embodiments of the invention relate to the field of electromagnetic audio speakers; and more specifically, to spiders for use in compact audio speakers.
2. Background
Audio speakers use electrical signals to produce air pressure waves which are perceived as sounds. Many audio speakers use a diaphragm that is movably suspended in a frame by a surround. The diaphragm is coupled to a voice coil assembly that is suspended in a magnetic field. The electrical signals representing the sound flow through the voice coil and interact with the magnetic field. This causes the voice coil and the coupled diaphragm to oscillate in response to the electrical signal. The oscillation of the diaphragm produces air pressure waves.
It is desirable to provide an additional support for the diaphragm and voice coil assembly using a spider. The spider readily flexes in the direction of motion of the diaphragm, but resists motion perpendicular to the diaphragm's motion. The spider surrounds the voice coil assembly in an annular manner.
It is desirable for the spider to be spaced at a distance from the surround to improve the resistance to perpendicular motion. The magnet assembly that provides the magnetic field in which the voice coil assembly is suspended is typically the part of the speaker that is furthest from the surround. The spider is typically attached to the speaker frame above the magnet assembly placing it closer to the surround than the magnet assembly.
Speakers used in compact, portable devices often need to be thin. This requires a construction that reduces the distance between the surround and the magnet assembly. This can make it difficult to attach the spider at a sufficient distance from the surround to effective resist perpendicular motion of the diaphragm and voice coil assembly.
Thus it would be desirable to provide audio speaker that is thin while having a spider attached at a sufficient distance from the surround to effectively resist perpendicular motion of the diaphragm and voice coil assembly.
SUMMARY
A magnet assembly for a audio speaker provides a gap through which a voice coil assembly passes. A magnetic member, a pole piece, and a yoke form a magnetic circuit that focuses magnetic energy in the gap. A spider movably supports the voice coil assembly. The spider is coupled to one of the magnetic member or the yoke by forming the one of the magnetic member or the yoke in two parts and joining the two parts with a portion of the spider between the two parts. The spider may be formed from a thin film thermoplastic, such as polyetheretherketone, and may be less than 10 microns thick. The portion of the spider that is between the two parts may be shaped such that a portion of the two parts are in direct contact with one another.
Other features and advantages of the present invention will be apparent from the accompanying drawings and from the detailed description that follows below.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention may best be understood by referring to the following description and accompanying drawings that are used to illustrate embodiments of the invention by way of example and not limitation. In the drawings, in which like reference numerals indicate similar elements:
FIG. 1 is a pictorial view of an audio speaker that has been cut away along a diameter to allow the construction to be better seen.
FIG. 2 is a cross-section of a portion of a magnet assembly shown in FIG. 1.
FIG. 3 is a cross-section of a portion of another magnet assembly.
FIG. 4 is a pictorial view of another spider and one part of a magnetic member.
FIG. 5 is a cross-section of a portion of still another magnet assembly.
FIG. 6 is a pictorial view of another audio speaker that has been cut away along a diameter to allow the construction to be better seen.
 DETAILED DESCRIPTION
In the following description, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In other instances, well-known circuits, structures and techniques have not been shown in detail in order not to obscure the understanding of this description.
FIG. 1 is a pictorial view of an audio speaker 100 that has been cut away along a diameter to allow the construction to be better seen. A diaphragm 102 is coupled to a frame 106 by a surround 104 that readily flexes to allow the diaphragm to move freely along an axis that is perpendicular to the face of the diaphragm.
FIG. 2 is a cross-section of a portion of a magnet assembly shown in FIG. 1. The magnet assembly includes a magnetic member 112, 114, a yoke 110 magnetically coupled to the magnetic member, and a pole piece 116 magnetically coupled to the magnetic member. The pole piece forms one side of a gap through which a voice coil assembly 120, 122 passes. The magnetic member 112, 114, the yoke 110, and the pole piece 116 form a magnetic circuit that focuses magnetic energy in the gap.
A spider 130 is coupled to the magnetic member by forming the magnetic member in a first part 112 and a second part 114 and joining the two parts with a portion 132 of the spider between the two parts. It will be appreciated that creating an additional gap in the magnetic circuit degrades the circuit. The spider 130 may be formed from a thin film thermoplastic to minimize such degradation. For example, the thin film thermoplastic may have a thickness of less than 10 microns (0.010 mm, 0.0004 in.).
A magnet assembly may reach temperatures of about 100° Celsius (212° Fahrenheit) in operation. The thin film thermoplastic should have a glass transition temperature (Tg) substantially above the peak operating temperature of the magnet assembly, for example greater than 110° Celsius (230° Fahrenheit). The thin film thermoplastic may be polyetheretherketone (PEEK) which is strong, and heat-resistant having a glass transition temperature (Tg) of around 143° C. (289° F.).
The spider 130 provides a concentrically-waved film that couples the former 120 around which a voice coil 122 is wound to the magnet assembly. The concentrically-waved film of the spider 130 readily flexes in the direction of motion of the diaphragm 102, but resists motion perpendicular to the diaphragm's motion. The spider surrounds and is attached to the former 120 in an annular manner, such as by being adhesively joined.
FIG. 3 is a cross-section of a portion of another magnet assembly similar to the one shown in FIG. 2. In this assembly the portion 332 of the spider 330 that is between the two parts of the magnetic member 312, 314 is shaped such that an inner portion of one of the magnets 312 passes through the spider to directly contact the other magnet 314. The lessens the deleterious effects of the additional gap in the magnetic circuit that receives and supports a portion of the spider 330.
FIG. 4 is a pictorial view of another spider 430 and one part 414 of a magnetic member. The spider 430 includes a central opening 436 that is large enough to allow an inner portion 416 of the one magnet part 412 to pass through the spider to directly contact the other magnet part, as shown in FIG. 3. The spider 430 further includes peripheral openings 438 that allow projections 418 on the one magnet part 412 to pass through the spider to directly contact the other magnet part to further lessen the deleterious effects of the additional gap in the magnetic circuit. Other embodiments may provide only the peripheral openings, which may have different sizes, shapes, and/or positions and be of different numbers. Other embodiments may provide projections on both magnet parts and/or may provide recesses in one or both magnet parts to receive the projections.
FIG. 5 is a cross-section of a portion of still another magnet assembly similar to the one shown in FIG. 3. In this assembly the magnetic member 512 is a single part. The yoke is formed of a first part 510 and a second part 516 that includes the pole piece. A portion 532 of the spider 530 is supported between the two parts.
FIG. 6 is a pictorial view of another audio speaker 600 that has been cut away along a diameter to allow the construction to be better seen. In this embodiment the magnetic member 612, 614 and the pole piece 616 are external to the voice coil assembly 620. The yoke 610 extends to the inside of the voice coil assembly 620 to complete the magnetic circuit and form one side of the gap. The spider 630 is coupled to the magnetic member by forming the magnetic member in a first part 612 and a second part 614 and joining the two parts with a portion 632 of the spider between the two parts.
While certain exemplary embodiments have been described and shown in the accompanying drawings, it is to be understood that such embodiments are merely illustrative of and not restrictive on the broad invention, and that this invention is not limited to the specific constructions and arrangements shown and described, since various other modifications may occur to those of ordinary skill in the art. For example, the acoustic speaker has been illustrated as being round but it may also be an oval, rectangle, or other shape. The spider has been shown with a single convolution but it may be provided with other patterns of convolutions. The spider may be formed of materials other than PEEK or thermoplastics. The description is thus to be regarded as illustrative instead of limiting.

Claims (12)

What is claimed is:
1. A magnet assembly for an audio speaker, the magnet assembly comprising:
a magnetic member;
a yoke magnetically coupled to the magnetic member;
a pole piece magnetically coupled to the magnetic member and forming one side of a gap through which a voice coil assembly passes, the magnetic member, the yoke, and the pole piece forming a magnetic circuit that focuses magnetic energy in the gap; and
a spider that is coupled to one of the magnetic member or the yoke by forming the one of the magnetic member or the yoke in two separable parts and joining the two separable parts with a portion of the spider between the two separable parts, the spider being formed from a thin film thermoplastic having a thickness of less than 10 microns (0.010 mm, 0.0004 in.).
2. The magnet assembly of claim 1 wherein the thin film thermoplastic has a glass transition temperature (Tg) of greater than 110 Celsius (230 Fahrenheit).
3. The magnet assembly of claim 1 wherein the thin film thermoplastic is polyetheretherketone (PEEK).
4. The magnet assembly of claim 1 wherein the portion of the spider that is between the two separable parts of the magnetic member or the yoke is shaped such that a portion of at least one of the two separable parts passes through the spider to directly contact the other of the two separable parts.
5. A method of assembling a magnet assembly for an audio speaker, the method comprising:
providing a magnetic member;
magnetically coupling a yoke to the magnetic member;
magnetically coupling a pole piece to the magnetic member to form a gap with the yoke through which a voice coil assembly passes, the magnetic member, the yoke, and the pole piece forming a magnetic circuit that focuses magnetic energy in the gap; and
forming one of the magnetic member or the yoke in two separable parts;
providing a spider formed from a thin film thermoplastic having a thickness of less than 10 microns (0.010 mm, 0.0004 in.), and
joining the two separable parts with a portion of the spider between the two separable parts.
6. The method of claim 5 wherein the thin film thermoplastic has a glass transition temperature (Tg) of greater than 110 Celsius (230 Fahrenheit).
7. The method of claim 5 wherein the thin film thermoplastic is polyetheretherketone (PEEK).
8. The method of claim 5 further comprising shaping the portion of the spider that is between the two separable parts of the magnetic member or the yoke such that a portion of at least one of the two separable parts passes through the spider to directly contact the other of the two separable parts.
9. A magnet assembly for an audio speaker comprising:
a magnetic member;
a yoke magnetically coupled to the magnetic member;
means for forming a gap in a magnetic circuit that focuses magnetic energy in the gap; and
means for supporting a voice coil assembly that passes through the gap, the means being formed from a thin film thermoplastic having a thickness of less than 10 microns (0.010 mm, 0.0004 in.), the means being supported by one of the magnetic member or the yoke which is formed in two separable parts that are joined with a portion of the means between the two separable parts.
10. The magnet assembly of claim 9 wherein the thin film thermoplastic has a glass transition temperature (Tg) of greater than 110 Celsius (230 Fahrenheit).
11. The magnet assembly of claim 9 wherein the thin film thermoplastic is polyetheretherketone (PEEK).
12. The magnet assembly of claim 9 wherein shaping the portion of the means for supporting the voice coil assembly that is between the two separable parts of the magnetic member or the yoke is shaped such that a portion of at least one of the two separable parts passes through the means to directly contact the other of the two parts.
US13/762,259 2013-02-07 2013-02-07 Speaker magnet assembly with included spider Active US8934657B2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US13/762,259 US8934657B2 (en) 2013-02-07 2013-02-07 Speaker magnet assembly with included spider
EP14702406.1A EP2954698B1 (en) 2013-02-07 2014-01-16 Speaker magnet assembly with included spider
KR1020157024155A KR101718274B1 (en) 2013-02-07 2014-01-16 Speaker magnet assembly with included spider
PCT/US2014/011854 WO2014123674A1 (en) 2013-02-07 2014-01-16 Speaker magnet assembly with included spider
CN201480007695.4A CN104969573B (en) 2013-02-07 2014-01-16 Include the speaker magnets component of support ring
AU2014215702A AU2014215702B2 (en) 2013-02-07 2014-01-16 Speaker magnet assembly with included spider
TW103103959A TWI548261B (en) 2013-02-07 2014-02-06 Speaker magnet assembly with included spider

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13/762,259 US8934657B2 (en) 2013-02-07 2013-02-07 Speaker magnet assembly with included spider

Publications (2)

Publication Number Publication Date
US20140219479A1 US20140219479A1 (en) 2014-08-07
US8934657B2 true US8934657B2 (en) 2015-01-13

Family

ID=50031624

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/762,259 Active US8934657B2 (en) 2013-02-07 2013-02-07 Speaker magnet assembly with included spider

Country Status (7)

Country Link
US (1) US8934657B2 (en)
EP (1) EP2954698B1 (en)
KR (1) KR101718274B1 (en)
CN (1) CN104969573B (en)
AU (1) AU2014215702B2 (en)
TW (1) TWI548261B (en)
WO (1) WO2014123674A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9354677B2 (en) 2013-09-26 2016-05-31 Sonos, Inc. Speaker cooling
US9446559B2 (en) 2014-09-18 2016-09-20 Sonos, Inc. Speaker terminals
US9451345B2 (en) 2013-09-09 2016-09-20 Sonos, Inc. Loudspeaker assembly configuration
US9525931B2 (en) 2012-08-31 2016-12-20 Sonos, Inc. Playback based on received sound waves
US9538293B2 (en) 2014-07-31 2017-01-03 Sonos, Inc. Apparatus having varying geometry
US9681233B2 (en) 2013-09-09 2017-06-13 Sonos, Inc. Loudspeaker diaphragm
US10021488B2 (en) 2015-07-20 2018-07-10 Sonos, Inc. Voice coil wire configurations
US10492005B1 (en) 2018-05-23 2019-11-26 Microsoft Technology Licensing, Llc High-efficiency speaker with multi-magnet structure
US20200077198A1 (en) * 2018-08-29 2020-03-05 AAC Technologies Pte. Ltd. Speaker

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015201940A1 (en) * 2015-02-04 2016-08-04 Sennheiser Electronic Gmbh & Co. Kg Electrodynamic transducer
CN105681983A (en) * 2016-01-12 2016-06-15 瑞声光电科技(常州)有限公司 Loudspeaker
US11102567B2 (en) 2016-09-23 2021-08-24 Apple Inc. Foldable headphones
US10945076B2 (en) 2016-09-23 2021-03-09 Apple Inc. Low spring-rate band
EP3734989B1 (en) * 2017-11-20 2023-07-05 Apple Inc. Headphones
WO2019195288A1 (en) 2018-04-02 2019-10-10 Apple Inc. Headphones

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB451178A (en) 1935-01-29 1936-07-29 Guy Birkbeck Improvements in loud speakers
US5848174A (en) 1998-02-09 1998-12-08 Ki; Young Do Linear movement speaker system
US6222931B1 (en) 1989-05-11 2001-04-24 Outline Snc High power acoustical transducer
US6778677B2 (en) * 2002-07-16 2004-08-17 C. Ronald Coffin Repairable electromagnetic linear motor for loudspeakers and the like
DE202004014927U1 (en) 2003-09-29 2005-02-24 Merry Electronics Co., Ltd. Thin type loudspeaker has vibration membrane peripherally connected to chamber periphery, central damper of ribbed cross-section with central part fixed to electromagnet set, oscillation coil joined to damper periphery
US20050117772A1 (en) 2003-12-02 2005-06-02 Merry Electronics Co., Ltd. Thin type speaker having a damper
FR2866777A3 (en) 2003-09-29 2005-08-26 Merry Electronics Co Ltd Thin type loudspeaker has vibration membrane peripherally connected to chamber periphery, central damper of ribbed cross-section with central part fixed to electromagnet set, oscillation coil joined to damper periphery
WO2007042032A2 (en) 2005-10-07 2007-04-19 Tymphany Denmark A/S Electroacoustic transducer
US20100046788A1 (en) 2008-08-22 2010-02-25 Michael Harris Loudspeaker Spider
US20100296689A1 (en) 2009-05-21 2010-11-25 Mark Pircaro Loudspeaker suspension
US8290201B2 (en) 2009-06-12 2012-10-16 Hosiden Corporation Speaker
US20130114846A1 (en) * 2010-01-15 2013-05-09 Phl Audio Electrodynamic transducer having a dome and a buoyant hanging part
US20140072163A1 (en) * 2011-04-08 2014-03-13 Azuma Chemical Co., Ltd. Microspeaker diaphragm edge member, microspeaker diaphragm, microspeaker, and electronic device

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB451178A (en) 1935-01-29 1936-07-29 Guy Birkbeck Improvements in loud speakers
US6222931B1 (en) 1989-05-11 2001-04-24 Outline Snc High power acoustical transducer
US5848174A (en) 1998-02-09 1998-12-08 Ki; Young Do Linear movement speaker system
US6778677B2 (en) * 2002-07-16 2004-08-17 C. Ronald Coffin Repairable electromagnetic linear motor for loudspeakers and the like
FR2866777A3 (en) 2003-09-29 2005-08-26 Merry Electronics Co Ltd Thin type loudspeaker has vibration membrane peripherally connected to chamber periphery, central damper of ribbed cross-section with central part fixed to electromagnet set, oscillation coil joined to damper periphery
DE202004014927U1 (en) 2003-09-29 2005-02-24 Merry Electronics Co., Ltd. Thin type loudspeaker has vibration membrane peripherally connected to chamber periphery, central damper of ribbed cross-section with central part fixed to electromagnet set, oscillation coil joined to damper periphery
US20050117772A1 (en) 2003-12-02 2005-06-02 Merry Electronics Co., Ltd. Thin type speaker having a damper
WO2007042032A2 (en) 2005-10-07 2007-04-19 Tymphany Denmark A/S Electroacoustic transducer
US20100046788A1 (en) 2008-08-22 2010-02-25 Michael Harris Loudspeaker Spider
US20100296689A1 (en) 2009-05-21 2010-11-25 Mark Pircaro Loudspeaker suspension
US8290199B2 (en) * 2009-05-21 2012-10-16 Bose Corporation Loudspeaker suspension
US8290201B2 (en) 2009-06-12 2012-10-16 Hosiden Corporation Speaker
US20130114846A1 (en) * 2010-01-15 2013-05-09 Phl Audio Electrodynamic transducer having a dome and a buoyant hanging part
US20140072163A1 (en) * 2011-04-08 2014-03-13 Azuma Chemical Co., Ltd. Microspeaker diaphragm edge member, microspeaker diaphragm, microspeaker, and electronic device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
International Search Report and the Written Opinion of the International Searching Authority, for corresponding International Application No. PCT/US2014/011854, mailing date of Apr. 22, 2014, 10 pages.

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9736572B2 (en) 2012-08-31 2017-08-15 Sonos, Inc. Playback based on received sound waves
US9525931B2 (en) 2012-08-31 2016-12-20 Sonos, Inc. Playback based on received sound waves
US9877111B2 (en) 2013-09-09 2018-01-23 Sonos, Inc. Loudspeaker assembly configuration
US9681233B2 (en) 2013-09-09 2017-06-13 Sonos, Inc. Loudspeaker diaphragm
US9451345B2 (en) 2013-09-09 2016-09-20 Sonos, Inc. Loudspeaker assembly configuration
US9730359B2 (en) 2013-09-26 2017-08-08 Sonos, Inc. Speaker cooling
US9451724B2 (en) 2013-09-26 2016-09-20 Sonos, Inc. Speaker cooling
US9354677B2 (en) 2013-09-26 2016-05-31 Sonos, Inc. Speaker cooling
US9538293B2 (en) 2014-07-31 2017-01-03 Sonos, Inc. Apparatus having varying geometry
US9918167B2 (en) 2014-07-31 2018-03-13 Sonos, Inc. Speaker spider having varying corrugation geometry
US9446559B2 (en) 2014-09-18 2016-09-20 Sonos, Inc. Speaker terminals
US9992577B2 (en) 2014-09-18 2018-06-05 Sonos, Inc. Speaker basket
US10021488B2 (en) 2015-07-20 2018-07-10 Sonos, Inc. Voice coil wire configurations
US10492005B1 (en) 2018-05-23 2019-11-26 Microsoft Technology Licensing, Llc High-efficiency speaker with multi-magnet structure
US20200077198A1 (en) * 2018-08-29 2020-03-05 AAC Technologies Pte. Ltd. Speaker
US10932045B2 (en) * 2018-08-29 2021-02-23 AAC Technologies Pte. Ltd. Speaker

Also Published As

Publication number Publication date
EP2954698B1 (en) 2017-03-29
WO2014123674A1 (en) 2014-08-14
CN104969573A (en) 2015-10-07
US20140219479A1 (en) 2014-08-07
AU2014215702A1 (en) 2015-09-03
KR20150116887A (en) 2015-10-16
AU2014215702B2 (en) 2016-08-11
CN104969573B (en) 2018-04-27
KR101718274B1 (en) 2017-03-20
EP2954698A1 (en) 2015-12-16
TWI548261B (en) 2016-09-01
TW201440543A (en) 2014-10-16

Similar Documents

Publication Publication Date Title
US8934657B2 (en) Speaker magnet assembly with included spider
CN106375915B (en) A speaker and earphones
US20120269379A1 (en) Diaphragm used in a loudspeaker and a loudspeaker
CN102333270A (en) sounder
US20110243364A1 (en) Structure of loudspeaker for reducing thickness and mounting depth
US20160192087A1 (en) Hybrid receiver module
US9756426B2 (en) Loudspeaker
WO2022166388A1 (en) Sound producing device and earphone
WO2022166374A1 (en) Sound producing unit
JP2019514299A (en) Noise shielded ear set and method of manufacturing the same
WO2022166379A1 (en) Sound producing unit
KR20180079856A (en) High-resolution electro-magnetic speaker of bridge edge method
KR20140013894A (en) Speaker
US8428297B2 (en) Acoustic transducer
WO2013170510A1 (en) Armature apparatus for moving-iron speaker or telephone receiver
JP2004253852A (en) Electroacoustic transducer
JP2006279797A (en) Electrodynamic speaker
JP5367534B2 (en) Electromagnetic electroacoustic transducer
CN206272837U (en) Speakers and Headphones
KR200453990Y1 (en) Multifunction micro speaker
JPWO2016051744A1 (en) Magnetic circuit and loudspeaker using the same
US20160112783A1 (en) Speaker retainer
TWI542225B (en) Audio playback device
KR101259577B1 (en) The receiver with magnetic plate
KR101257634B1 (en) Speaker system

Legal Events

Date Code Title Description
AS Assignment

Owner name: APPLE INC., CALIFORNIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WILK, CHRISTOPHER;REEL/FRAME:029777/0188

Effective date: 20130207

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

STCF Information on status: patent grant

Free format text: PATENTED CASE

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551)

Year of fee payment: 4

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 8